Not able to query after Alter table in DB2

We have a table someone created in DB2. I have no idea how they created it. But when I edit the table, It edits just fine. But after edit I can not query the table at all THE COLUMN CANNOT BE ADDED TO THE TABLE BECAUSE THE TABLE HAS AN EDIT PROCEDURE.

I looked ibm site and found this how to edit table using procedure But I have no idea how to do this.

Is there anything that I can do to fix this with out following the procedure mentioned in second link?

I restarted server, but still no help. First I'm not able to figure out why I get the error in first place.

I'm using DB Visualizer and DB2 on linux.

Solution

This is sometimes default behavior of DB2. We need to run reorgchk command to fix these errors. More info below..